Timer calculator



FIG. 1 is a front side top perspective view of the timer calculator showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 bottom plan view thereof; and,

FIG. 7 is a back elevational view thereof.

The broken lines depicting environmental structure are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a timer calculator, as shown and described. 